Grabbing device applied to truss group

Abstract

The grabbing device comprises a clamping jaw seat, a plurality of clamping jaw assemblies are symmetrically and evenly distributed on the two sides of the clamping jaw seat, each clamping jaw assembly comprises two clamping jaws which are arranged in a bilateral symmetry mode, the two clamping jaws are hinged to a starting plate respectively, and the clamping jaws can freely swing front and back relative to the starting plates; the two starting plates are connected with a clamping jaw air cylinder, and the clamping jaw air cylinder stretches out and draws back to drive the two clamping jaws to be opened and closed left and right so that the truss can be grabbed. The grabbing device applied to the truss set is ingenious in structural design, high in automation degree, capable of sliding on the machine frame front and back and left and right, capable of ascending and descending relative to the machine frame, flexible to use and capable of grabbing a plurality of trusses on the same horizontal plane at the same time due to the fact that the clamping jaw assemblies are evenly distributed on the front side and the rear side of the clamping jaw base. And by arranging the swinging clamping jaw and the triggering assembly, the reliability of grabbing the truss is greatly improved, and the efficiency of assembling and welding the truss is effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of construction engineering, in particular to a grabbing device applied to a truss group. Background Art

[0002] To speed up construction and save materials, steel truss floor slabs are gaining popularity in the engineering community and are increasingly being used. Steel truss floor slabs are manufactured by factory-processing the steel bars in the floor slab into steel trusses, and processing the galvanized steel sheets into corrugated steel sheets. The steel trusses and galvanized steel sheets are then resistance-welded to form a monolithic composite floor slab. During the construction phase, they replace formwork and scaffolding to bear construction loads, while the upper steel bars participate in structural load-bearing during use. They are an economical, convenient, safe, and reliable building floor material.

[0003] In recent years, the forms of steel truss floor decking have become more and more diverse, mainly including metal formwork and wooden formwork. The metal bottom formwork can be removed or not, while the wooden formwork generally needs to be removed. However, if the bottom plate is removed, it will be time-consuming and labor-intensive, and the concrete will be exposed, requiring plastering and then whitewashing. If the bottom plate is not removed, the metal bottom formwork cannot be plastered and whitewashed, so a suspended ceiling is required to cover the bottom formwork. Therefore, in response to the above-mentioned technical problems, the applicant has developed a truss plate that does not require disassembly, which buries the lower part of the steel truss in the concrete slurry. As the concrete slurry solidifies and forms, it is connected to the steel truss, that is, the connection between the bottom plate and the steel truss is completed during the production of the concrete bottom plate, which avoids the structural complexity of the bottom plate caused by the connection part of the steel truss, and reduces the installation of additional connectors and the workload of completing the connection between the steel truss and the bottom plate through the connectors.

[0004] In the process of producing the above-mentioned truss panels, steel trusses are usually placed one by one in a mold, and then concrete slurry is laid in the mold. After being vibrated and smoothed, it is formed. The formed truss panels can be used in construction projects. However, in actual production and processing, if the steel trusses are placed one by one manually, the workers' labor intensity is high, the production efficiency is low, and the consistency of the spacing and height of the trusses cannot be guaranteed, which affects the quality of the final truss panels. Therefore, the applicant welded multiple steel trusses to form a truss group, and only one truss group needs to be placed in the mold, which effectively improves the production efficiency of the truss panels. However, truss panels are produced in large quantities, and the use of manual welding of truss groups still brings problems of high labor intensity and low production efficiency for workers. In addition, it is also very dependent on the workers' welding skills. Therefore, the applicant designed a truss group welding equipment that places the trusses on a welding platform for welding and operates automatically. However, how to reliably and stably grasp multiple trusses on the same horizontal plane has become a technical problem. Utility Model Content

[0005] The utility model provides a grabbing device for a truss group, which can grab multiple trusses on the same horizontal plane. The specific technical solution is as follows:

[0006] A grasping device for a truss group includes a clamping jaw seat with multiple clamping jaw assemblies symmetrically distributed on both sides of the clamping jaw seat. The clamping jaw assembly includes two clamping jaws arranged symmetrically on the left and right. The two clamping jaws are respectively hinged to a starting plate, and the clamping jaws can swing freely back and forth relative to the starting plate; the two starting plates are connected to the clamping jaw cylinder, and the extension and contraction of the clamping jaw cylinder can drive the two clamping jaws to open and close left and right to achieve grasping of the truss.

[0007] Furthermore, the clamping cylinder is fixed on the cylinder mounting plate, and the cylinder mounting plate is provided with an articulated arm extending in the extending direction of the cylinder. The articulated arm is hinged to the middle part of the starting plate. A long hole is provided at one end of the starting plate. The starting plate is hinged to the output shaft of the clamping cylinder through the long hole, and the other end of the starting plate is connected to the clamping claw, thereby realizing the extension and contraction of the clamping claw cylinder to drive the two clamping claws to open and close left and right.

[0008] Furthermore, the cylinder mounting plate is connected to the clamping jaw fixing frame, the clamping jaw fixing frame is fixed on the clamping jaw seat, and the cylinder mounting plate can float freely up and down on the clamping jaw fixing frame.

[0009] Furthermore, a floating plate is fixedly connected to the articulated arm. When the clamp grabs the truss, the lower edge of the floating plate can contact the top of the truss, so that the clamp and the cylinder as a whole can float freely up and down relative to the clamp seat.

[0010] Furthermore, it also includes a frame, on which a clamping claw slide is provided, and the clamping claw slide can move horizontally left and right relative to the frame; the clamping claw seat is connected to the clamping claw slide, and the clamping claw slide is connected to the clamping claw slide, and the clamping claw slide can move up and down relative to the clamping claw slide.

[0011] Furthermore, the clamping slide is arranged on the mobile frame, and the mobile frame is provided with a gear, which is connected to the drive motor. A rack meshing with the gear is fixedly provided on the frame, and the gear is driven to rotate by the drive motor, thereby realizing the left and right sliding of the mobile frame on the frame.

[0012] Furthermore, the clamp slide can be slid back and forth on the mobile frame, and the mobile frame is provided with a clamp moving assembly, which can drive the clamp slide to slide back and forth on the mobile frame so that the clamp seat can correspond to the middle position of the truss to be grasped.

[0013] Furthermore, a trigger assembly is provided on the clamping jaw seat, and the trigger assembly includes a trigger rod, which is slidable up and down on the clamping jaw seat, and a travel switch is provided above the trigger rod. The travel switch and the trigger rod are spaced apart. After the trigger rod contacts the truss, the truss can lift the trigger rod relative to the clamping jaw seat and contact the travel switch to trigger the clamping jaw cylinder to contract and close the clamping jaw.

[0014] Furthermore, a switch bracket is fixed on the clamping jaw seat, and a long hole is provided on the switch bracket. The travel switch is fixed on the switch bracket through the long hole to facilitate adjustment of the distance between the travel switch and the trigger rod.

[0015] Furthermore, a horizontal rod is connected to the lower end of the trigger rod, and the horizontal rod can increase the contact area with the truss.

[0016] The grabbing device applied to the truss group of the utility model has an ingenious structural design and a high degree of automation. It can slide back and forth, left and right on the frame, and can be raised and lowered relative to the frame. It is flexible to use. In addition, by distributing multiple claw assemblies on the front and back sides of the claw seat, multiple trusses on the same horizontal plane can be grabbed at the same time. By providing the swinging claws and trigger assemblies, the reliability of grabbing the trusses is greatly improved, and the efficiency of the truss group welding is effectively improved.

[0017] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0019] Figure 1 A three-dimensional diagram of a clamping claw seat of a grabbing device applied to a truss assembly according to the present invention;

[0020] Figure 2 for Figure 1 A magnified view of part A;

[0021] Figure 3 Schematic diagram of the connection point of the truss gripped by the gripper;

[0022] Figure 4 A perspective view of a grabbing device applied to a truss assembly according to the present invention;

[0023] Figure 5 It is a schematic diagram of the connection between the gripper base and the mobile frame;

[0024] Figure 6 This is a schematic diagram of the installation of a trigger assembly of a grabbing device applied to a truss group according to the present invention. DETAILED DESCRIPTION

[0025] In order to better understand the purpose, function and specific design of the present invention, the following is a further detailed description of the grabbing device applied to a truss group of the present invention in conjunction with the accompanying drawings.

[0026] like Figure 1-6 As shown, the gripping device applied to the truss group of the present invention includes a clamping claw seat 1, and a plurality of clamping claw assemblies 2 are symmetrically distributed on the front and rear sides of the clamping claw seat 1. The clamping claw assembly 2 includes two clamping claws 21 arranged symmetrically on the left and right. The two clamping claws 21 are respectively connected to a starting plate 22, and the two starting plates 22 are connected to the clamping claw cylinder 23. The extension and retraction of the clamping claw cylinder 23 can drive the two clamping claws 21 to open and close left and right to achieve the gripping of the truss 3.

[0027] like Figure 2 As shown, the clamping cylinder 23 is fixed on the cylinder mounting plate 24, and the cylinder mounting plate 24 is provided with an articulated arm 25 extending in the extension direction of the cylinder. The articulated arm 25 is hinged to the middle part of the starting plate 22, and one end of the starting plate 22 is provided with a long hole. The starting plate 22 is hinged to the output shaft of the clamping cylinder 23 through the long hole, and the other end of the starting plate 22 is connected to the clamping jaw 21, thereby realizing the extension and contraction of the clamping jaw 23 to drive the two clamping jaws 21 to open and close left and right.

[0028] Preferably, the clamping jaw 21 is hinged to the starting plate 22, and the clamping jaw 21 can swing freely back and forth relative to the starting plate 22, so that when the clamping jaw 21 grabs the truss 3, even if it grabs the connection point of the truss 3, it can avoid the connection point and effectively grab the truss 3.

[0029] The cylinder mounting plate 24 is connected to the clamp fixing frame 26, and the clamp fixing frame 26 is fixed on the clamp base 1. The cylinder mounting plate 24 can float freely up and down relative to the clamp fixing frame 26, so that the clamp 21 and the clamp cylinder 23 as a whole can float freely up and down relative to the clamp base 1, so as to achieve the simultaneous grasping of multiple trusses 3 with different heights.

[0030] In this embodiment, a long hole 261 is vertically provided on the clamping clamp fixing frame 26, and the cylinder mounting plate 24 is connected to the clamping clamp fixing frame 26 by bolts through the long hole 261. The bolts can move in the long hole 261, thereby realizing a floating connection between the cylinder mounting plate 24 and the clamping clamp fixing frame 26.

[0031] It is worth noting that a floating plate 27 is fixedly connected to the articulated arm 25. When the clamp 21 grabs the truss 3, the lower edge of the floating plate 27 contacts the top of the truss 3, so that the clamp 21 and the clamp cylinder 23 can float freely up and down relative to the clamp seat 1 as a whole.

[0032] like Figure 4-5As shown, the gripping device of this embodiment also includes a frame 4, and the truss 3 to be gripped and the welding platform 5 are arranged below the frame 4. The frame 4 is provided with a clamping slide 6, and the clamping slide 6 can move horizontally left and right relative to the frame 4; the clamping seat 1 is connected to the clamping slide 7, and the clamping slide 7 is connected to the clamping slide 6, and the clamping slide 7 can move up and down relative to the clamping slide 6. Specifically, a fixed plate 61 is provided on the clamping slide 6, and linear guides are provided on both sides of the clamping slide 7. The sliders of the linear guides are connected to the fixed plate 61 to realize the sliding connection between the clamping slide 7 and the clamping slide 6. The clamping slide 7 is also provided with a clamping lifting assembly 71, and the clamping lifting assembly 71 can drive the clamping slide 7 to rise and fall relative to the clamping slide 6. The clamping lifting assembly 71 can adopt an existing worm gear screw lift, or other existing drive devices that can realize linear reciprocating motion.

[0033] The clamping slide 6 of this embodiment can be set on the mobile frame 8 so as to slide forward and backward, and the mobile frame 8 can be set on the frame 4 so as to slide left and right. Specifically, a gear is provided on the mobile frame 8, and the gear is connected to the drive motor. A rack meshing with the gear is fixedly provided on the frame 4, and the gear is driven to rotate by the drive motor, thereby realizing the sliding of the mobile frame 8 on the frame 4; a clamping moving assembly 81 is provided on the mobile frame 8, and the clamping moving assembly 81 can drive the clamping slide 6 to slide on the mobile frame 8, so that the clamping seat 1 can correspond to the middle position of the truss 3 to be grasped. The clamping moving assembly 81 can adopt an existing worm gear screw elevator, or other existing driving device that can realize linear reciprocating motion. Preferably, in order to improve the stability of the movement of the clamping slide 6, a linear guide is provided on the mobile frame 8, and the clamping slide 6 is fixedly connected to the slider of the linear guide, so that the clamping slide 6 can slide back and forth on the linear guide.

[0034] like Figure 6As shown, preferably, in order to improve the reliability of the gripping of the truss 3 by the gripping jaws 21, a trigger assembly 9 is further provided on the gripping jaw seat 1. The trigger assembly 9 includes a trigger rod 91, which is slidably arranged on the gripping jaw seat 1. A travel switch 92 is provided above the trigger rod 91. The travel switch 92 is spaced apart from the trigger rod 91. After the trigger rod 91 contacts the truss 3, the truss 3 can lift the trigger rod 91 relative to the gripping jaw seat 1 for a certain distance, and then contact the travel switch 92, thereby triggering the gripping jaw cylinder 23 to retract, causing the gripping jaws 21 to close and complete the gripping of the truss 3. A linear guide is vertically provided on the trigger rod 91 of this embodiment, and the slider of the linear guide is fixedly connected to the gripping jaw seat 1 to realize the connection between the trigger rod 91 and the gripping jaw seat 1. A switch bracket 93 is fixed on the gripping jaw seat 1, and the travel switch 92 is provided on the switch bracket 93. Preferably, the switch bracket 93 is provided with an adjustment hole 931, through which the limit switch 92 is fixed to the switch bracket 93, so as to facilitate adjustment of the distance between the limit switch 92 and the trigger rod 91. To improve the reliability of the trigger rod 91, a horizontal rod 94 is connected to the lower end of the trigger rod 91. The horizontal rod 94 can increase the contact area with the truss 3, thereby making the trigger assembly 9 more reliable.

[0035] The grabbing device applied to the truss group of the present invention has an ingenious structural design and a high degree of automation. It can slide back and forth, left and right on the frame 4, and can be raised and lowered relative to the frame 4. It is flexible to use. In addition, by distributing multiple claw assemblies 2 on the front and back sides of the claw seat 1, multiple trusses 3 on the same horizontal plane can be grabbed at the same time. By providing the swinging claws 21 and the trigger assembly 9, the reliability of grabbing the trusses 3 is greatly improved, and the efficiency of welding the trusses 3 group is effectively improved.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A grabbing device for a truss group, characterized in that: It includes a clamping jaw seat, and multiple clamping jaw assemblies are symmetrically distributed on both sides of the clamping jaw seat. The clamping jaw assembly includes two clamping jaws arranged symmetrically on the left and right. The two clamping jaws are respectively hinged to a starting plate, and the clamping jaws can swing freely back and forth relative to the starting plate; the two starting plates are connected to the clamping jaw cylinder, and the extension and contraction of the clamping jaw cylinder can drive the two clamping jaws to open and close left and right to achieve the grasping of the truss.

2. The grabbing device for a truss assembly according to claim 1, wherein: The gripper cylinder is fixed on the cylinder mounting plate. The cylinder mounting plate is provided with an articulated arm extending in the extending direction of the cylinder. The articulated arm is hinged to the middle part of the starting plate. A long hole is provided at one end of the starting plate. The starting plate is hinged to the output shaft of the gripper cylinder through the long hole. The other end of the starting plate is connected to the gripper, thereby realizing the extension and retraction of the gripper cylinder to drive the two grippers to open and close left and right.

3. The grabbing device for a truss assembly according to claim 2, wherein: The cylinder mounting plate is connected to the clamping jaw fixing frame, the clamping jaw fixing frame is fixed on the clamping jaw seat, and the cylinder mounting plate can float freely up and down on the clamping jaw fixing frame.

4. The grabbing device for a truss assembly according to claim 3, wherein: A floating plate is fixedly connected to the articulated arm. When the clamp grabs the truss, the lower edge of the floating plate can contact the top of the truss, so that the clamp and the cylinder as a whole can float freely up and down relative to the clamp seat.

5. The grabbing device for a truss assembly according to claim 1, wherein: It also includes a frame, on which a clamping claw slide is provided, and the clamping claw slide can move horizontally left and right relative to the frame; the clamping claw seat is connected to the clamping claw slide, and the clamping claw slide is connected to the clamping claw slide, and the clamping claw slide can move up and down relative to the clamping claw slide.

6. The grabbing device for a truss assembly according to claim 5, characterized in that: The clamping slide is set on the mobile frame, which is provided with a gear. The gear is connected to the drive motor. A rack engaged with the gear is fixed on the frame. The gear is driven by the drive motor to rotate, thereby realizing the left and right sliding of the mobile frame on the frame.

7. The grabbing device for a truss assembly according to claim 6, wherein: The clamping slide can be slid forward and backward and is set on the mobile frame. The mobile frame is provided with a clamping moving assembly. The clamping moving assembly can drive the clamping slide to slide forward and backward on the mobile frame so that the clamping seat can correspond to the middle position of the truss to be grasped.

8. The grabbing device for a truss assembly according to claim 1, wherein: A trigger assembly is also provided on the clamping jaw seat, which includes a trigger rod. The trigger rod is slidable up and down on the clamping jaw seat. A travel switch is provided above the trigger rod. The travel switch and the trigger rod are spaced apart. After the trigger rod contacts the truss, the truss can lift the trigger rod relative to the clamping jaw seat and contact the travel switch to trigger the clamping jaw cylinder to contract and close the clamping jaw.

9. The grabbing device for a truss assembly according to claim 8, wherein: A switch bracket is fixed on the clamping jaw seat, and a long hole is provided on the switch bracket. The travel switch is fixed on the switch bracket through the long hole to facilitate the adjustment of the distance between the travel switch and the trigger rod.

10. The grabbing device for a truss assembly according to claim 8, wherein: The lower end of the trigger rod is connected with a horizontal rod, and the horizontal rod can increase the contact area with the truss.

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